diff --git a/install/GNUmakefile b/install/GNUmakefile
index 7b0a48985f950cdd401758a6238f7257f6e280d7..3fae5901d42163cce80e79283ce071360dd15981 100644
--- a/install/GNUmakefile
+++ b/install/GNUmakefile
@@ -80,7 +80,7 @@ endif
 MKFLAGS	+=	os=$(os)
 
 ifndef NOCAP
-ifeq (($os),linux)
+ifeq ($(os),linux)
 	SETCAP 	:=	setcap
 endif
 endif